Process of embossing and perforating thermoplastic film

Details Process of embossing and perforating thermoplastic film Process of embossing and perforating thermoplastic film

1979-05-23

1981-07-28

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Making hole or aperture in article

264154, 264163, 264284, 264DIG47, 264DIG48, 264DIG70, B29C 1700, B29D 2700

Patent

active

042809789

ABSTRACT:
In the process of embossing film by continuously passing the film through a nip formed by cooperating pattern and backup rolls, the improvement of passing the embossed pattern while in registration with the pattern roll through a second nip to improve the pattern detail. The apparatus includes a second backup roll in pressurized contact with the pattern roll forming the second nip. The surface configuration of the rolls may be such as to locally perforate the film within the pattern.

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